论文标题
来自U（2）风味对称性的中微子可观察力
Neutrino Observables from a U(2) Flavor Symmetry
论文作者
论文摘要
我们研究了具有U（2）风味对称性的广泛模型的CP阶段和绝对中微子质量尺度的预测。为此，我们考虑了中微子和充电的Lepton Mass矩阵中相同的特殊纹理，这些矩阵在夸克行业中是成功的。尽管在中微子扇区中，U（2）结构强制执行两个纹理零，而带电的Lepton扇区对PMNS矩阵的贡献可以通过两个旋转角度参数化。限制了至少其中一个角度很小的情况，我们获得了三种代表性的情况。在所有情况下，我们都会获得60美元范围内中微子质量总和的狭窄预测，可能是在即将到来的Galaxy调查实验的范围内。如果近距离实验日期提供了中性s中性双β衰减或反向中微子质量订购的证据，则可以排除所有场景。
We study the predictions for CP phases and absolute neutrino mass scale for broad classes of models with a U(2) flavor symmetry. For this purpose we consider the same special textures in neutrino and charged lepton mass matrices that are succesful in the quark sector. While in the neutrino sector the U(2) structure enforces two texture zeros, the contribution of the charged lepton sector to the PMNS matrix can be parametrized by two rotation angles. Restricting to the cases where at least one of these angles is small, we obtain three representative scenarios. In all scenarios we obtain a narrow prediction for the sum of neutrino masses in the range of 60$-$75 meV, possibly in the reach of upcoming galaxy survey experiments. All scenarios can be excluded if near-future experimental date provide evidence for either neutrinoless double-beta decay or inverted neutrino mass ordering.
